/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_encap.c: encapsulated command propagation and parsing
 *
 *  Copyright (C) 2003 by the past and present ircd coders, and others.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 *
 *  $Id: m_encap.c 147 2005-12-26 02:52:10Z jon $
 */

#include "stdinc.h"
#include "handlers.h"
#include "client.h"
#include "msg.h"
#include "parse.h"
#include "sprintf_irc.h"
#include "s_serv.h"
#include "send.h"
#include "modules.h"
#include "irc_string.h"

static void ms_encap(struct Client *, struct Client *, int, char *[]);

struct Message encap_msgtab = {
	"ENCAP", 0, 0, 3, 0, MFLG_SLOW, 0,
	{m_ignore, m_ignore, ms_encap, m_ignore, m_ignore, m_ignore}
};

#ifndef STATIC_MODULES
void
_modinit(void)
{
	mod_add_cmd(&encap_msgtab);
	add_capability("ENCAP", CAP_ENCAP, 1);
}

void
_moddeinit(void)
{
	mod_del_cmd(&encap_msgtab);
	delete_capability("ENCAP");
}
const char *_version = "$Revision: 147 $";
#endif

/*
 * ms_encap()
 *
 * inputs	- destination server, subcommand, parameters
 * output	- none
 * side effects	- propagates subcommand to locally connected servers
 */
static void
ms_encap(struct Client *client_p, struct Client *source_p, int parc, char *parv[])
{
	char buffer[IRCD_BUFSIZE], *ptr = buffer;
	unsigned int cur_len = 0, len, i;
	int paramcount, mpara = 0;
	struct Message *mptr = NULL;
	MessageHandler handler = 0;

	for(i = 1; i < (unsigned int) parc - 1; i++)
	{
		len = strlen(parv[i]) + 1;

		if((cur_len + len) >= sizeof(buffer))
			return;

		ircsprintf(ptr, "%s ", parv[i]);
		cur_len += len;
		ptr += len;
	}

	len = strlen(parv[i]);

	/*
	 * if the final parameter crosses our buffer size, should we bail, 
	 * like the rest, or should we truncate?  ratbox seems to think truncate,
	 * so i'll do that for now until i can talk to lee.  -bill
	 */

	if(parc == 3)
		ircsprintf(ptr, "%s", parv[2]);
	else
		ircsprintf(ptr, ":%s", parv[parc - 1]);

	if((cur_len + len) >= sizeof(buffer))
		buffer[sizeof(buffer) - 1] = '\0';

	sendto_match_servs(source_p, parv[1], CAP_ENCAP, "ENCAP %s", buffer);

	if(!match(parv[1], me.name))
		return;

	if((mptr = find_command(parv[2])) == NULL)
		return;

	paramcount = mptr->parameters;
	mpara = mptr->maxpara;

	mptr->bytes += strlen(buffer);

	/*
	 * yes this is an ugly hack, but it is quicker than copying the entire array again
	 * note: this hack wouldnt be needed if parv[0] were set to the command name, rather
	 * than being derived from the prefix, as it should have been from the beginning.
	 */
	ptr = parv[0];
	parv += 2;
	parc -= 2;
	parv[0] = ptr;

	if((handler = mptr->handlers[ENCAP_HANDLER]) == NULL)
		return;

	(*handler) (client_p, source_p, parc, parv);
}
